US Patent No: 5,308,311

Number of patents in Portfolio can not be more than 2000

Electrically heated surgical blade and methods of making

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Abstract

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A hemostatic surgical blade and methods of manufacturing such blades are provided, wherein the blade comprises a laminate region having a hardenable center layer and highly thermally conductive outer layers, joined to a second region of a low thermal conductivity material. A heating element is secured to the laminate region and in thermal communication therewith to thermally reform the collagen of tissue as it is incised. The heat generated by the heating element is conducted to the cutting edge of the blade to maintain the cutting edge temperature within 20.degree. C. to 70.degree. C. of a user-selected operating temperature. The second region reduces the conduction of heat to the handle of the instrument. The heating element comprises a thermally conductive dielectric layer attached to an outer surface of the laminate region, resistive conductive elements deposited on the dielectric, a second dielectric layer covering the resistive conductor elements, and an abherent coating disposed thereon to reduce coagulum buildup on the blade.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
GYRUS ACMI, INC.SOUTHBOROUGH, MA158
GYRUS ENT L.L.C.BARTLETT, TN82
HEMOSTATIC SURGERY CORPORATION, A CAYMAN ISLANDS COMPANYPALO ALTO, CA11

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Eggers, Philip E Dublin, OH 268 29326
Shaw, Robert F San Francisco, CA 22 1788

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Corning Glass Works (2)
4,231,371 Electrically heated surgical cutting instrument 41 1978
4,314,559 Nonstick conductive coating 168 1979
 
EVEREST MEDICAL CORPORATION (2)
4,802,476 Electro-surgical instrument 97 1987
4,958,539 Method of making an electrosurgical spatula blade 77 1989
 
GYRUS MEDICAL, INC. (2)
4,862,890 Electrosurgical spatula blade with ceramic substrate 96 1988
4,850,353 Silicon nitride electrosurgical blade 142 1988
 
HEMOSTATIC SURGERY CORPORATION, A CAYMAN ISLANDS COMPANY (2)
4,485,810 Surgical cutting blade 33 1980
4,481,057 Cutting device and method of manufacture 57 1981
 
AMP-AKZO CORPORATION, A CORP. OF DE (1)
4,770,067 Method of manufacturing surgical cutting tools for thermally aided surgery 15 1987
 
ELLMAN INTERNATIONAL, INC. (1)
4,754,754 Electrosurgical handpiece for blades and needles 61 1986
 
HEMOSTATIC SURGERY CORPORATION (1)
4,848,337 Abherent surgical instrument and method 82 1986
 
MEGADYNE MEDICAL PRODUCTS, INC. (1)
4,785,807 Electrosurgical knife 153 1987
 
Other [Check patent profile for assignment information] (2)
RE31723 Surgical cutting instrument having electrically heated cutting edge 21 1977
4,364,390 Surgical instrument having self-regulating dielectric heating of its cutting edge and method of using the same 39 1979

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
NEUROTHERM, INC. (27)
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6,126,682 Method for treating annular fissures in intervertebral discs 330 1998
6,099,514 Method and apparatus for delivering or removing material from the interior of an intervertebral disc 229 1998
6,261,311 Method and apparatus for treating intervertebral discs 197 1999
6,517,568 Method and apparatus for treating intervertebral discs 61 2000
6,547,810 Method for treating intervertebral discs 74 2000
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7,282,061 Method of treating intervertebral disc 58 2003
7,267,683 Method for treating intervertebral discs 27 2003
7,309,336 Catheter for delivery of energy to a surgical site 26 2004
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ETHICON ENDO-SURGERY, INC. (22)
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6,926,716 Electrosurgical instrument 296 2002
7,011,657 Jaw structure for electrosurgical instrument and method of use 223 2003
7,112,201 Electrosurgical instrument and method of use 97 2003
7,041,102 Electrosurgical working end with replaceable cartridges 290 2003
6,905,497 Jaw structure for electrosurgical instrument 192 2003
7,070,597 Electrosurgical working end for controlled energy delivery 209 2003
7,087,054 Electrosurgical instrument and method of use 207 2003
7,169,146 Electrosurgical probe and method of use 230 2004
7,189,233 Electrosurgical instrument 87 2004
7,354,440 Electrosurgical instrument and method of use 91 2004
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7,632,269 Electrosurgical instrument with replaceable cartridge 5 2005
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7,381,209 Electrosurgical instrument 75 2007
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ORATEC INTERVENTIONS, INC. (17)
6,482,204 Method and apparatus for controlled contraction of soft tissue 30 1996
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6,214,001 Electrocauterizing tool for orthopedic shave devices 87 1998
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6,358,273 Soft tissue heating apparatus with independent, cooperative heating sources 28 1999
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6,391,028 Probe with distally orientated concave curve for arthroscopic surgery 83 2000
6,645,203 Surgical instrument with off-axis electrode 24 2001
6,695,839 Method and apparatus for treatment of disrupted articular cartilage 36 2001
6,645,204 Intervertebral disc device employing flexible probe 2001
 
DOMAIN SURGICAL, INC. (14)
8,523,850 Method for heating a surgical implement 0 2009
8,523,851 Inductively heated multi-mode ultrasonic surgical tool 0 2009
8,523,852 Thermally adjustable surgical tool system 0 2009
8,506,561 Catheter with inductively heated regions 0 2009
8,491,578 Inductively heated multi-mode bipolar surgical tool 0 2009
8,430,870 Inductively heated snare 0 2009
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8,414,569 Method of treatment with multi-mode surgical tool 0 2009
8,377,052 Surgical tool with inductively heated regions 0 2009
8,372,066 Inductively heated multi-mode surgical tool 0 2009
8,292,879 Method of treatment with adjustable ferromagnetic coated conductor thermal surgical tool 0 2009
8,858,544 Surgical instrument guide 0 2012
8,425,503 Adjustable ferromagnetic coated conductor thermal surgical tool 0 2012
8,617,151 System and method of controlling power delivery to a surgical instrument 0 2012
 
SURGINETICS INC. (8)
8,562,603 Method for conducting electrosurgery with increased crest factor 0 2006
8,357,154 Multielectrode electrosurgical instrument 0 2006
8,357,155 Multielectrode electrosurgical blade 0 2006
7,935,112 Electrosurgical instrument 0 2006
7,935,113 Electrosurgical blade 1 2006
7,896,875 Battery powered electrosurgical system 0 2006
7,867,225 Electrosurgical instrument with needle electrode 0 2006
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ATRICURE, INC. (4)
6,179,837 Bipolar electrosurgical scissors 308 1995
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6,464,701 Bipolar electrosurgical scissors 214 2000
6,350,264 Bipolar electrosurgical scissors 244 2000
 
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6,287,305 Electrosurgical instrument 94 1997
6,241,723 Electrosurgical system 188 1999
6,533,781 Electrosurgical instrument 42 2000
7,377,919 Electrosurgical instrument 17 2004
 
COVIDIEN LP (3)
8,292,888 Bipolar or ultrasonic surgical device 10 2002
8,523,890 Bipolar or ultrasonic surgical device 0 2012
8,845,665 Bipolar or ultrasonic surgical device 0 2013
 
AMADA SURGICAL, INC. (2)
5,643,256 Gold-plated electrosurgical instrument 64 1995
5,885,281 Gold-plated electrosurgical instrument 29 1997
 
APPLIED MEDICAL RESOURCES CORPORATION (2)
7,909,819 Monopolar electrosurgical return electrode 6 2006
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5,476,461 Endoscopic light delivery system 24 1994
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Utah Medical Products, Inc. (2)
6,126,656 Electrosurgical cutting device 5 1996
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Applied Komatsu Technology, Inc. (1)
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BAKERY HOLDINGS LLC (1)
6,305,149 Method and apparatus for packaging meat 3 1998
 
Clinicon Corporation (1)
6,974,452 Cutting and cauterizing surgical tools 25 2000
 
CONMED CORPORATION (1)
6,511,479 Electrosurgical blade having directly adhered uniform coating of silicone release material and method of manufacturing same 48 2001
 
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HEMOSTATIX MEDICAL TECHNOLOGIES LLC (1)
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Hemostatix Medical Techs, LLC (1)
8,142,425 Hemostatic surgical blade, system and method of blade manufacture 5 2007
 
LINVATEC CORPORATION (1)
7,244,256 Electrosurgical device with adhesive-free insulating piece and method of making same 5 2004
 
NIKON CORPORATION (1)
6,003,419 Microcutting device and incising method 9 1998
 
OLYMPUS CORPORATION (1)
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OLYMPUS OPTICAL CO., LTD. (1)
7,329,257 Medical treatment instrument 190 2003
 
SMITH & NEPHEW, INC. (1)
7,150,747 Electrosurgical cutter 37 2003
 
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7,449,019 Intervertebral decompression 34 2003
 
WATLOW ELECTRIC MANUFACTURING COMPANY (1)
7,304,276 Thick film heater integrated with low temperature components and method of making the same 0 2001
 
Other [Check patent profile for assignment information] (2)
5,827,281 Insulated surgical scissors 289 1996
6,230,603 Cutting blade for resistance-heated elastomer cutters 1 1996